This page links to lists of monarchs that have reigned the various kingdoms and other states that have existed in the British Isles throughout recorded history.
King of the Britons
List of legendary kings of Scotland
Ancient Britons (legendary)
Ancient Britons (historical)
England
Bernicia
Bretwaldas (overlords)
Deira
East Anglia
Essex
Hwicce
Isle of Wight
Kent
Lindsey
Magonsaete
Mercia
Northumbria
Sussex
Wessex
York
Channel Islands
Great Britain and the United Kingdom
Ireland
High Kings (including legendary)
Ailech
Airgíalla
Breifne
Connacht
Dublin
Leinster
Mide
Moylurg
Munster
Osraige
Tara
Tir Eogain
Uisnech
Ulster
Mann
Mann & the Isles
Mann (lords)
Scotland
Dál Riata
Galloway
Orkney
Picts
Rhinns
Strathclyde
Wales
Dumnonia
Elmet
Gwynedd
Powys
Rheged
